Graphite Block
Hongshun：Your Professional Graphite Block manufacturer!
Hongshun Graphite focuses on graphite design and processing. The company has more than ten years of experience in graphite processing and has a complete series of design, processing and production systems. It mainly produces customized graphite products including graphite crucibles, graphite rods, graphite plates, graphite blocks, graphite electrodes, graphite rotors, graphite parts and graphite products of various sizes.
Why Choose Us
Advanced equipment
Our company has a complete production chain from design to production. We have more than 20 CNC lathes and milling machines. , drilling machines, ordinary lathes, and more than ten CNC engraving machines.
Professional team
Our company has 5 to 8 r&d personnel and more than 50 production personnel. It is a strong and technologically advanced production team.
High quality
We use high-quality graphite raw materials for processing and production. Each customer's product undergoes strict production inspection to ensure that the quality of the products produced reaches the customer's standards.
Remarkable service
Our team can design various graphite products for you, support customization according to drawings and processing according to samples, and provide you with 24-hour after-sales service and technical support.
Graphite blocks are used to make capable, reliable products.
Graphite blocks produce electrodes that exhibit high electrical conductivity properties as well as good refractory properties (for example, high thermal shock resistance and low thermal expansion).
Graphite blocks exhibit high mechanical strength, high thermal conductivity, and high density.
Graphite blocks are highly machinable.
Graphite Blocks are chemically stable and lightweight.
Application of graphite block
Powder metallurgy
In powder metallurgy, graphite blocks are used in sintering, where raw materials are placed on a graphite block and melted. The high temperature and oxidation resistance of graphite blocks meet the demanding requirements of the powder metallurgy industry.
Heat exchangers
Graphite blocks are used in the construction of heat exchangers due to their high-temperature resistance and excellent thermal conductivity.
Electrodes
Graphite blocks are used as electrodes in various applications such as electric arc furnaces, resistance welding, and electrolysis due to their high electrical conductivity.
Seals and gaskets
Graphite blocks are used as seals and gaskets in high-temperature and high-pressure applications due to their ability to withstand extreme conditions.
Crucibles
Graphite blocks are used as crucibles in the production of metals and alloys due to their high-temperature resistance and low reactivity with molten metals.
Nuclear industry
Graphite blocks are used as moderators and reflectors in nuclear reactors due to their ability to slow down neutrons and their high-temperature resistance.
Chemical industry
Graphite blocks are used in the production of chemicals such as phosphoric acid, hydrochloric acid, and sulfuric acid due to their resistance to corrosion and high-temperature resistance.
Semiconductor industry
Graphite blocks are used in the production of semiconductors due to their high-temperature resistance and excellent thermal conductivity.
Types of graphite blocks
A pyrolytic graphite block is of high purity. It is made by putting high-purity graphite parts into the furnace, adding nitrogen and methane under a vacuum at high temperatures, and then producing a coating in the graphite block. Pyrolytic graphite blocks have stronger resistance to oxidation than ordinary graphite blocks.
Amorphous graphite blocks are formed from amorphous graphite which is formed by contact metamorphism between a metamorphism agent and an anthracite coal seam. This type of graphite is microcrystalline graphite. This type of graphite has a higher content of ash than other types of graphite.
These blocks are formed from natural flake graphite which is made when carbon material is put under high pressures and temperatures.
These types of graphite blocks are made from pyrolytic graphite which is suspected to be a naturally occurring pyrolytic. Crystalline vein graphite blocks are high quality with a graphitic content that ranges from 94 to 99%. The purest samples of this type of graphite come from the middle of the vein.
These types of blocks are made from synthetic graphite which is made from coke and pitch. Synthetic graphite has higher purity than natural graphite.There are two types of synthetic graphite, electrographite and synthetic graphite.
Graphite block production process
Raw material selection
The first step in making graphite blocks is selecting the raw materials. High-quality graphite starts with high-purity carbon. Typically, natural graphite is used, which is mined from graphite deposits. Synthetic graphite, produced from petroleum coke or pitch coke, is another option.
Purification
To ensure the quality of a graphite block, whether it is derived from natural sources or synthesized, the raw graphite undergoes a purification process. This process includes chemical treatments, thermal processing, and mechanical methods. These processes eliminate contaminants and enhance the material's structural integrity and thermal conductivity.
Mixing and blending
Once purified, the graphite powder is mixed with binders and additives. Binders help hold the graphite particles together during shaping and initial stages of processing.
Shaping
The shaping and forming of graphite blocks are accomplished through methods such as isostatic pressing, extrusion, or die molding. The choice of method depends on the specific requirements of the customer.
Thermal treatment
After shaping, the green graphite blocks undergo a series of thermal treatments to further enhance their properties. The blocks are heated to high temperatures in a controlled atmosphere or vacuum environment. This process, known as graphitization, transforms the amorphous carbon structure into a crystalline graphite structure, improving thermal and electrical conductivity while reducing porosity.
Machining and finishing
Once graphitized, the blocks are machined to achieve precise dimensions and surface finishes. Machining processes such as milling, drilling, and grinding are employed to shape the blocks according to specific requirements.
Quality control
Throughout the manufacturing process, rigorous quality control measures are implemented to ensure that the graphite blocks meet the required standards and specifications.
Application-specific processing
Depending on the intended use, additional processing steps May be required to tailor the graphite blocks to specific applications.
Final inspection and packaging
Once the graphite blocks have undergone all necessary processing steps, they undergo final inspection to verify compliance with quality standards. Blocks that meet the specifications are carefully packaged to prevent damage during transportation and storage.
Packaging and shipping
Packaging personnel wear dust-free gloves throughout the packaging process, and each product is individually packaged with pearl cotton. Each product in each layer is separated by cardboard, and finally placed in wooden boxes for packaging to ensure that it is not damaged during transportation.
The product will be shipped within three days at the earliest after the customer places the order. The specific delivery time will be determined according to the customer's demand and requirements. After confirming the delivery cycle with the customer, our company will reasonably arrange the time to ensure that it is shipped within the time required by the customer.
certificate
We have ISO 9001,certification, CE certification, EAC certification etc.
FAQ
We're well-known as one of the leading graphite block manufacturers and suppliers in China. Please feel free to buy high quality graphite block made in China here from our factory. For customized service, contact us now.
High Purity Graphite Crucible, High Strength Graphite Block, Conductive Graphite Rod